Dental Materials • NEET MDS
Addition silicone PVS = most accurate no byproduct.
Condensation silicone = releases alcohol byproduct = shrinkage.
Polysulfide = longest setting time messiest = lead dioxide accelerator.
Polyether = stiffest most hydrophilic = initial rigidity.
Alginate = irreversible hydrocolloid = snap set.
Agar = reversible hydrocolloid = high detail low strength.
Impression plaster = most rigid.
Use these mnemonics during your revision. The key associations above are designed to help you recall Impression Materials concepts instantly during the exam. Focus on the “equals” associations — these are the most commonly tested patterns in NEET MDS.